Improved apparatus for preserving provisions



air, is all that is required'.

UNITED STATESv PATENT OFFICE.

CHARLES WINSHIP, OF NIIVV HA-VEN, CONNECTICUT.

l IMFROVED APPARATUS FOR PRES-ERVING PROVISIONS.

- Specification formingpart of Lettersl Patent No. 44,683, dated October Il, 1864.

' To all whom it remy concern.

Beit known that I, CHARLES WINsHIP,'of

New Haven, in the `county of N ewHaven and State of Connecticut, have invented a new and useful Improvement in Apparatus for Preserving Provisions; and I do hereby declare the following to be a full, clear, and exact descrip- Y tion of the same, when ,taken in connection with the accompanying drawings and the letters of reference marked thereon, and which said drawings constitute partof this specification, and represent, in

Figures l, 2, and 3, `vertical sections of my apparatus. y

Same letters indicate like parts. Y y

Experience has .demonstrated the fact that thorough ventilation isfmore essential to the proper preservation of provisions than extreme cold;.,that ,atemperaturevof from'` 500.

to'GO Fahrenheit, with perfect circulation of .The object of my invention is to'construct a'ch'amber which shall be constantly supplied with fresh air of from 450 to '600, so as to entirely` dispense with the necessity of using ice for preserving provisions; and my invention consists. in constructing a box, chest, or other chamber, to which air is conducted through a duct, a portion of which said duet is placed in a cold place-as a well, or in the earth-so that the air passing through the duct to the chamber will be cooled to nearly the temperature of the well or earth or whatever it passes through, creating a circulation by means of a second tube, which leads from .the chamber to some naturally warm position,

constructed inthe h'ouse, its sides protected f by some' non-conducting substance in .similar manner as common refrigerators.

B represents' a common well, withv openings 1 through' the covering, through which air may pass, as denoted by arrows 5 or the well may be open,'or other means employed t0 supply fresh air to the well. I place an air-duct, C,

inthe said well, one end opening in the well, p

above the water, or may extend out through the cover, running down into the water, thence up, out, and to the chamber A. Through this said duet air is made to pass to the chamber.

I- inclose the said duct above the well'with any nonconductor of heat. To' create a current to draw' the 'cool air in to and keep up a constant rapid circulation, I attach a iue or tube, D, opening from the chamberA'at. the

Vopposite end from which the cold airis admittedv(as see Figs. l, 2, and 3)-'-that is, if the col'dair is admitted at the top, as in-Fig. 1, the outlet should be at the bottom, and vice versa-as in Figs. 2 and 3. From the vsaid outlet vawjpipe or tube leadsnptosomepninhnatf nrally warm, as'the attic of a house, or into a vwarm flue in a chimney. This will create a draft through the chamber, the airentering the duct C passing down lthrough the cold water, thence, cooled, up to andy circulating;

through the chamber and away .through the tube D. .The air, never being confined in the chamber, but always cool and fresh, will preserve provisions better than ice'can do, withy any known mode of ventilating'refrigerators.

- Should the draft be too great, as it is in some I positions, I introduce .dampersi to cut o' a part of the draft and for the purpose of regulating the'saine.` y.

Artificial heat may be applied to the tube D by inserting a-lamp or' gas-burner therein, as denoted in red, Fig. 3. A very small ame, not over one-half foot per hour, will perfectly ventilate a comparatively large ehambenjl Water inthe well isf-not'.` positively required' neither is the well itself, as the ducts-may beV buried in the earth, itsmonth 'opening'above,v

so as to admit air tolpass down; but I prefer an ordinary well, the water serving as a good cooler. 'A drip should be attached' near the .lowest portion of the duct, to receive the natural condensation.

Thus I construct a provision-preserver far superior to ice-refrigerators, and without the expensive aid of ice.

- .I do not broadly claim Ventilating a chamber by passing air through it, as this is done' in many refrigerators, butin such the'cause AVsume to circulatethrough, a chamber, sub- A of the circulation is'the ice therein contained, stantiaily in the mannerl land forv the purpose vand without which there would benovventilaspecified. A

1 CHARLES WINSHIP-l tion5but g f y.

What l do claim as of my invention, 'and vde- Witnesses.: t v sire to secure byLetters Patent, -is- A. JEFFERY Conducting cooled' air t. o,arv1d causing' the. JOHN E. li'ARLE. 

